The wild poppy belongs to the family Papaveraceae (the Poppy family). It is a biennial herb that is native to the Mediterranea region, especially southwestern Europe. This herb grows in fields or stream banks and can reach 60-80 cm in height. The stem is erect and grows sparse bristles. The leaves are grayish green, narrow cordate with indented toothed edges and enfold stems at the bases. The rose pink to white flowers with magenta to pink mottles on the inside surface come in April and May. The naturalization of this species was confirmed at Atsumi Penninsula of Japan in 1964. The plant contains morphine and it is banned cultivating by Opium Act in Japan.